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12 pags., 6 figs., 4 tabs. ; We report on theoretical elastic and experimental vibrational-excitation differential cross sections (DCSs) for electron scattering from para-benzoquinone (C6H4O2), in the intermediate energy range 15–50 eV. The calculations were conducted with two different theoretical methodologies, the Schwinger multichannel method with pseudopotentials (SMCPP) and the independent atom method with screening corrected additivity rule (IAM-SCAR) that also nowincorporates a further interference (I) term. The SMCPP with N energetically open electronic states (Nopen) at the static-exchange-pluspolarisation (Nopench-SEP) level was used to calculate the scattering amplitudes using a channel coupling scheme that ranges from 1ch-SE up to the 89ch-SEP level of approximation.We found that in going from the 38ch-SEP to the 89ch-SEP, at all energies considered here, the elastic DCSs did not change significantly in terms of both their shapes and magnitudes. This is a good indication that our SMCPP 89ch-SEP elastic DCSs are converged with respect to the multichannel coupling effect for the investigated intermediate energies. While agreement between our IAM-SCAR+I and SMCPP 89ch- SEP computations improves as the incident electron energy increases from 15 eV, overall the level of accord is only marginal. This is particularly true at middle scattering angles, suggesting that our SCAR and interference corrections are failing somewhat for this molecule below50 eV.We also report experimental DCS results, using a crossed-beam apparatus, for excitation of some of the unresolved ("hybrid") vibrational quanta (bands I–III) of para-benzoquinone. Those data were derived from electron energy loss spectra that were measured over a scattered electron angular range of 10–90 and put on an absolute scale using our elastic SMCPP 89ch-SEP DCS results. The energy resolution of our measurements was s80 meV, which is why, at least in part, the observed vibrational features were only partially resolved. To the best of our knowledge, there are no other experimental or theoretical vibrational excitation results against which we might compare the present measurements. ; This study has been partially supported by the Spanish Ministry MINECO (Project No. FIS2016-80440), COST (CM301 Action) and ITN-Marie Curie (No. ARGENT-608163) European Union programmes. M.A.P.L., M.T.do.N.V. (Grant No. 305672/2014-2), R.F.C., and M.H.F.B. all acknowledge financial support from CNPq, while F.K. (Grant No. 2015/23792-5) and M.T.do.N.V. (Grant No. 2014/10012-9) also thank FAPESP for financial support. Finally, M.J.B. (No. DP160102787) and R.D.W. acknowledge the Australian Research Council for funding. ; Peer Reviewed

13 págs.; 8 figs.; 6 tabs. ; We report results from a joint experimental and theoretical investigation into electron scattering from the important industrial species furfural (CHO). Specifically, differential cross sections (DCSs) have been measured and calculated for the electron-impact excitation of the electronic states of CHO. The measurements were carried out at energies in the range 20-40 eV, and for scattered-electron angles between 10°and 90°. The energy resolution of those experiments was typically ∼80 meV. Corresponding Schwinger multichannel method with pseudo-potential calculations, for energies between 6-50 eV and with and without Born-closure, were also performed for a sub-set of the excited electronic-states that were accessed in the measurements. Those calculations were undertaken at the static exchange plus polarisation-level using a minimum orbital basis for single configuration interaction (MOB-SCI) approach. Agreement between the measured and calculated DCSs was qualitatively quite good, although to obtain quantitative accord, the theory would need to incorporate even more channels into the MOB-SCI. The role of multichannel coupling on the computed electronic-state DCSs is also explored in some detail. ©2016 AIP Publishing LLC ; R.F.C.N. thanks CNPq (Brazil) and the Science Without Borders Programme for opportunities to study abroad. D.B.J. thanks the Australian Research Council (ARC) for financial support provided through a Discovery Early Career Research Award, while M.J.B. also thanks the ARC for their support. M.J.B. and M.C.A.L. acknowledge the Brazilian agencies CNPq and FAPEMIG. P.L.-V. acknowledges the Portuguese Foundation for Science and Technology (FCTMEC) through Grant Nos. PTDC/FIS-ATO/1832/2012 and UIO/FIS/00068/2013. G.G. acknowledges partial financial support from the Spanish Ministry MINECO (Project No. FIS2012-31230) and the European Union COST Action No. CM1301 (CELINA). Finally, R.F.d.C., M.T.d.N.V., M.H.F.B., and M.A.P.L. acknowledge support from the Brazilian agency CNPq and M.T.d.N.V. also thanks FAPESP. ; Peer Reviewed

8 págs.; 4 figs.; 4 tabs. ; We report cross sections for electron-impact excitation of vibrational quanta in furfural, at intermediate incident electron energies (20, 30, and 40 eV). The present differential cross sections are measured over the scattered electron angular range 10°-90°, with corresponding integral cross sections subsequently being determined. Furfural is a viable plant-derived alternative to petrochemicals, being produced via low-temperature plasma treatment of biomass. Current yields, however, need to be significantly improved, possibly through modelling, with the present cross sections being an important component of such simulations. To the best of our knowledge, there are no other cross sections for vibrational excitation of furfural available in the literature, so the present data are valuable for this important molecule. C 2015 AIP Publishing LLC ; This work was supported by the Australian, Brazilian, and Spanish government funding agencies (ARC, CNPq, CAPES). D.B.J. thanks the ARC for a Discovery Early Career Researcher Award. R.F.C.N. acknowledges CNPq and Flinders University for financial asistance, while M.J.B. thanks CNPq for his "Special Visiting Professor" award. R.F.C., M.T.N.V., and M.A.P.L. acknowledge financial support from FAPESP, while R.F.C., M.T.N.V., M.H.F.B., M.C.A.L., and M.A.P.L. acknowledge financial support from CNPq. M.C.A.L. also acknowledges support from FAPEMIG. G.G. thanks the Spanish Ministerio de Economía y Competitividad under Project No. FIS2012-31230 and the European Union COST Action CM1301 for funding. ; Peer Reviewed

11 págs.; 6 figs.; 5 tabs. ; © 2015 AIP Publishing LLC. We report results from a joint theoretical and experimental investigation into electron scattering from the important organic species phenol (C6H5OH). Specifically, differential cross sections (DCSs) have been measured and calculated for the electron-impact excitation of the electronic states of C6H5OH. The measurements were carried out at energies in the range 15-40 eV, and for scattered-electron angles between 10 and 90. The energy resolution of those experiments was typically ∼80 meV. Corresponding Schwinger multichannel method with pseudo-potentials calculations, with and without Born-closure, were also performed for a sub-set of the excited electronic-states that were accessed in the measurements. Those calculations were conducted at the static exchange plus polarisation (SEP)-level using a minimum orbital basis for single configuration interaction (MOBSCI) approach. Agreement between the measured and calculated DCSs was typically fair, although to obtain quantitative accord, the theory would need to incorporate even more channels into the MOBSCI. ; This research was supported by the Australian and Brazilian Governmental Funding Agencies (ARC, CNPq and CAPES). D.B.J. thanks the ARC for a Discovery Early Career Researcher Award. R.F.C.N. acknowledges CNPq and Flinders University for financial assistance, while H.V.D. acknowledges CAPES and Flinders. M.J.B. thanks CNPq for his "Special Visiting Professor" award. E.M.O., R.F.C., M.T.N.V., and M.A.P.L. acknowledge financial support from FAPESP, while R.F.C., M.T.N.V., M.H.F.B., M.C.A.L., and M.A.P.L. acknowledge financial support from CNPq. K.L.N. thanks CNPq for an "Attracting Young Talent Grant" under the "Science Without Borders" program. G.G. acknowledges financial support from MINECO (FIS2012-31230) and COST (MP1002, CM1301). ; Peer Reviewed